WTS] The Ultimate Blue-mo! - A Seiko "Sumo" ref. SBDC003 with Sapphire, Ceramic, Automatic 6R Movement, OEM Bracelet, and Full Box and Papers, Just $399 Shipped! : r/Watchexchange
Seiko SBDC003 (10) | Hoang Le | Flickr
FS : Seiko 1st gen blue SUMO(Blumo) sbdc003 $250 | The Watch Site
Seiko Prospex Scuba SBDC003 Blue Sumo - Shopping In Japan NET